The problem with these robo calls is if you ever aknowledge one of those calls by pushing 1, or another number per their instructions, it tells them they have reached a real number, and they turn around and sell it to others. You could notify the FCC, and these companies are fined $500 everytime. Most people never do. Luckily, with verizon, you can block up to 5 numbers for 90 days for free. All this works for spam messages too. Never respond by typing STOP, etc as they will know they have reached a real number.